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Java > Open Source Codes > org > apache > commons > vfs > perf > FileNamePerformance


1 package org.apache.commons.vfs.perf;
2
3 import org.apache.commons.vfs.FileName;
4 import org.apache.commons.vfs.FileObject;
5 import org.apache.commons.vfs.FileSystemException;
6 import org.apache.commons.vfs.FileSystemManager;
7 import org.apache.commons.vfs.VFS;
8
9 public class FileNamePerformance
10 {
11     private final static int NUOF_RESOLVES = 100000;
12
13     public static void main(String JavaDoc[] args) throws FileSystemException
14     {
15         FileSystemManager mgr = VFS.getManager();
16
17         FileObject root = mgr
18                 .resolveFile("smb://HOME\\vfsusr:vfs%2f%25\\te:st@10.0.1.54/vfsusr");
19         FileName rootName = root.getName();
20     
21         testNames(mgr, rootName);
22
23         testChildren(root);
24
25         testFiles(mgr);
26     }
27
28     private static void testFiles(FileSystemManager mgr) throws FileSystemException
29     {
30         for (int i = 0; i < 10; i++)
31         {
32             // warmup jvm
33 mgr.resolveFile("smb://HOME\\vfsusr:vfs%2f%25\\te:st@10.0.1.54/vfsusr/many/path/elements/with%25esc/any%25where/to/file.txt");
34         }
35
36         long start = System.currentTimeMillis();
37         for (int i = 0; i < NUOF_RESOLVES; i++)
38         {
39             mgr.resolveFile("smb://HOME\\vfsusr:vfs%2f%25\\te:st@10.0.1.54/vfsusr/many/path/elements/with%25esc/any%25where/to/file.txt");
40         }
41         long end = System.currentTimeMillis();
42
43         System.err.println("time to resolve " + NUOF_RESOLVES + " files: "
44                 + (end - start) + "ms");
45     }
46
47     private static void testChildren(FileObject root) throws FileSystemException
48     {
49         for (int i = 0; i < 10; i++)
50         {
51             // warmup jvm
52 root.resolveFile("/many/path/elements/with%25esc/any%25where/to/file.txt");
53         }
54
55         long start = System.currentTimeMillis();
56         for (int i = 0; i < NUOF_RESOLVES; i++)
57         {
58             root.resolveFile("/many/path/elements/with%25esc/any%25where/to/file.txt");
59         }
60         long end = System.currentTimeMillis();
61
62         System.err.println("time to resolve " + NUOF_RESOLVES + " childs: "
63                 + (end - start) + "ms");
64     }
65
66     private static void testNames(FileSystemManager mgr, FileName rootName) throws FileSystemException
67     {
68         for (int i = 0; i < 10; i++)
69         {
70             // warmup jvm
71 mgr.resolveName(rootName,
72                     "/many/path/elements/with%25esc/any%25where/to/file.txt");
73         }
74
75         long start = System.currentTimeMillis();
76         for (int i = 0; i < NUOF_RESOLVES; i++)
77         {
78             mgr.resolveName(rootName,
79                     "/many/path/elements/with%25esc/any%25where/to/file.txt");
80         }
81         long end = System.currentTimeMillis();
82
83         System.err.println("time to resolve " + NUOF_RESOLVES + " names: "
84                 + (end - start) + "ms");
85     }
86 }
87
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